Using mathematical methods to understand and model crime is a recent idea that has drawn considerable attention from researchers during those years. From the plethora of models that have been proposed, perhaps the most successful one has been a diffusion-type differential equations model that describes how the number of criminals evolves in a specific area. We propose a more detailed form of this model that allows for two distinct criminal types associated with major and minor crime. Newton's

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... w of Cooling also supports the model's potential to describe crime.